No, sorry. I'm using Windows 7, and when I said the volume gets reset after using CCleaner, I meant it gets louder. I have the System Sounds slider set very low, and after using CCleaner it gets reset to somewhere between 40-50%. The same thing happens with the sliders for several other programs I use. It never used to do this, and I'm pretty sure it's the result of me ticking one of the many boxes in the Custom Clean section. I may have to go through the process of elimination and un-tick them until I find the culprit if someone doesn't know which one it is.